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How can I check whether a option already exist in select by JQuery
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341
This evaluates to true if it already exists:
$("#yourSelect option[value='yourValue']").length...
Fastest way to find second (third…) highest/lowest value in vector or column
... min lq mean median uq max neval
Rfast 160.364 179.607 202.8024 194.575 210.1830 351.517 100
maxN 396.419 423.360 559.2707 446.452 487.0775 4949.452 100
order 1288.466 1343.417 1746.7627 1433.221 1500.7865 13768.148 100
For 1 million numbers:
N =...
RGB to hex and hex to RGB
... @cwolves:
function rgbToHex(r, g, b) {
return "#" + ((1 << 24) + (r << 16) + (g << 8) + b).toString(16).slice(1);
}
alert(rgbToHex(0, 51, 255)); // #0033ff
Update 3 December 2012
Here's a version of hexToRgb() that also parses a shorthand hex triplet such as "#...
How to crop an image in OpenCV using Python
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edited Dec 19 '17 at 15:45
opyate
4,9893131 silver badges5656 bronze badges
answered Mar 23 '13 at 17:...
Razor view engine, how to enter preprocessor(#if debug)
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– Timothy Kanski
Feb 9 '17 at 16:14
If it's DEBUG mode, the pre-processor will essentially read public static bool I...
TypeError: not all arguments converted during string formatting python
...but the same length" . The part I'm having a problem with is in the bottom 4 lines.
11 Answers
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How does Python manage int and long?
...on 2: sys.maxint contains the maximum value a Python int can hold.
On a 64-bit Python 2.7, the size is 24 bytes. Check with sys.getsizeof().
Python 3: sys.maxsize contains the maximum size in bytes a Python int can be.
This will be gigabytes in 32 bits, and exabytes in 64 bits.
Such a large int...
JavaScript to scroll long page to DIV
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4
For people looking for animation or smooth scroll: document.getElementById('#something').scrollIntoView({ behavior: 'smooth', block: 'center...
How to round up a number to nearest 10?
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answered Oct 24 '09 at 22:03
Daren SchwenkeDaren Schwenke
5,03833 gold badges2424 silver badges3434 bronze badges
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Get Slightly Lighter and Darker Color from UIColor
...values instead.
– rchampourlier
Jun 4 '13 at 10:01
2
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